getChildrenNames

Returns an unmodifiable set of relative children names, or
returns null if the parent node is not found or if no children are found.
This is a fairly expensive operation, and is assumed to be performed by
browser applications. Calling this method as part of a run-time
transaction is not recommended.

put

Stores a map of key-values for a given FQN, but does not delete existing
key-value pairs (that is, it does not erase).
Intended to be used in a non-transactional environment, but will use
auto-commit in a transactional environment.

loadEntireState

Fetches the entire state for this cache from secondary storage (disk, DB)
and returns it as a byte buffer. This is for initialization of a new
cache from a remote cache. The new cache would then call
CacheLoader.storeEntireState(byte[]).

subtree - Fqn naming the root (i.e. highest level parent) node of
the subtree included in state. If the Fqns
of the data included in state are not
already children of subtree, then their
Fqns should be altered to make them children of
subtree before they are persisted.